Check individual terms after expanding

[artur zanon]

Hi there! I have an issue and I found no solutions.

After using expand(), i'd like to gather the individual terms of my resulting equation.

Example:

Initial equation: x*(x + 2)

After expand(): x**2 + 2*x

I'd like a way to get the two resulting terms: x**2 and 2*x.

Using split() works most of the time, but when i have fractions, it does not.

Example: a/(a + 2) + b/(a + 2). Using split() here does not work.

Thanks!

[Aaron Meurer]

On Thu, Aug 4, 2022 at 2:57 PM artur zanon <turcat...@gmail.com> wrote:
>
> Hi there! I have an issue and I found no solutions.
> After using expand(), i'd like to gather the individual terms of my resulting equation.
> Example:
> Initial equation: x*(x + 2)
> After expand(): x**2 + 2*x
> I'd like a way to get the two resulting terms: x**2 and 2*x.
> Using split() works most of the time, but when i have fractions, it does not.

What do you mean by split()? There is no such SymPy function from what
I can see. Do you mean the string method str.split? You should not use
string functions to do symbolic manipulations on SymPy expressions.

The best way to get what you want is to use Add.make_args, like

>>> Add.make_args(x**2 + 2*x)
(x**2, 2*x)

Aaron Meurer

> Example: a/(a + 2) + b/(a + 2). Using split() here does not work.
>
> Thanks!
>

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